Septoplasty yesterday morning. Breathe normal until 15 hours post op. Nose 100% blocked up and ears pop when I swallow. Makes me panic/ dizzy. Normal?

Yes, normal. This is caused by swelling both in the nose and in the nasopharynx, the area behind the nose and above the throat. Your eustachian tubes live there and they swell up too, blocking air from getting into your middle ear space. Thus, pressure changes occur in the middle ear space, causing blocked hearing and sometimes pain.
Yes. Keep your head elevated, borrow a vaporizer from a friend with small children, may need a decongestant or antihistamine. Call your doctor and tell them you're miserable.